diff --git a/contacts-in-mautic.php b/contacts-in-mautic.php
index 16e8f3b..3a6d728 100644
--- a/contacts-in-mautic.php
+++ b/contacts-in-mautic.php
@@ -173,7 +173,7 @@ class="contacts-in-mautic-text"/>
 	
 		<?php 
 		$credentials = get_option( '_bsf_mautic_cnt_credentials' );
-		$expires_in = $credentials['expires_in'];
+		$expires_in = isset( $credentials['expires_in'] ) ? $credentials['expires_in'] : '';
 		if( ! isset( $credentials['access_token'] ) ) { ?>
 
 		<div class="form-setting">
diff --git a/readme.txt b/readme.txt
index f6bf75e..dbaffb8 100644
--- a/readme.txt
+++ b/readme.txt
@@ -1,9 +1,9 @@
 === Contacts in Mautic ===
-Contributors: brainstormforce, rahulwalunje-1
+Contributors: brainstormforce
 Tags: mautic, contacts, api, count, email
 Requires at least: 4.1
 Stable tag: 1.0.0
-Tested up to: 4.8.1
+Tested up to: 5.1
 
 Display your Mautic Contacts count on your website